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Question: If the area to be covered for TV telecast is doubled the height of transmitting antenna (TV tower) w...

If the area to be covered for TV telecast is doubled the height of transmitting antenna (TV tower) will have to be –

A

Doubled

B

Halved

C

Quadrupled

D

Kept unchanged

Answer

Doubled

Explanation

Solution

Area covered by TV signals = pd2 , d = 2Rh\sqrt{2Rh}

where, R is the radius of the earth and h is height of antenna. Ah\begin{matrix} A \propto h \end{matrix}.